Diabetic nephropathy is divided into five stages. Speaking in terms of the severity of the condition, in the second stage, the clinical manifestations are not very obvious, and the patient's kidney size may increase. Generally, at rest, the patient's urine protein is negative, but after activity, there might be traces of albumin in the urine. Due to the presence of a small amount of protein in the urine, there may be an increase in urine foam, and the patient may experience mild edema, although the symptoms of this edema are also not very noticeable. At this stage, the damage of diabetes to other organs of the body is not very evident, therefore, retinopathy is not severe, and the patient’s vision decline is not significant. The patient may also have concurrent issues like hypertension and hyperlipidemia.